I disagree that it isn’t possible to express the concept in Spanish, and that “rastrear” (‘to track’) and “seguir” (‘to follow’) are somehow interchangeable (it’s not the same as “hacer seguimiento”). However, “Gestor de incidencias” is absolutely fine, since not all requests are bugs (= ‘defectos’), but also it may accomodate enhancement requests (‘solicitudes de mejora’). Thanks!